package com.zqw.netty.http;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.*;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpRequestDecoder;
import io.netty.handler.codec.http.HttpRequestEncoder;
import io.netty.handler.codec.http.HttpResponseEncoder;

/**
 * @Author: zhuquanwen
 * @Description:
 * @Date: 2018/5/28 9:53
 * @Modified:
 **/
public class Server {
    public static void main(String[] args) {
        ServerBootstrap bootstrap = new ServerBootstrap();
        EventLoopGroup boss = new NioEventLoopGroup();
        EventLoopGroup worker = new NioEventLoopGroup();
        try{
            bootstrap.group(boss, worker);
            bootstrap.option(ChannelOption.SO_BACKLOG, 2048);
            bootstrap.childOption(ChannelOption.TCP_NODELAY, true);
            bootstrap.childOption(ChannelOption.SO_KEEPALIVE, true);
            bootstrap.channel(NioServerSocketChannel.class);
            bootstrap.childHandler(new ChannelInitializer<Channel>() {
                @Override
                protected void initChannel(Channel ch) throws Exception {
                    ch.pipeline().addLast(new HttpRequestDecoder());
                    ch.pipeline().addLast(new HttpResponseEncoder());
                    ch.pipeline().addLast(new HttpObjectAggregator(1024*1024));
                    ch.pipeline().addLast(new ServerHandler());
                }
            });
            ChannelFuture future = bootstrap.bind(7777);
            System.out.println("http server start success");
            future.channel().closeFuture().sync();

        }catch (Exception e){
            e.printStackTrace();
        } finally {
            boss.shutdownGracefully();
            worker.shutdownGracefully();
        }
    }
}

package com.zqw.netty.http;

import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelHandlerInvoker;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.*;
import io.netty.util.concurrent.EventExecutorGroup;

/**
 * @Author: zhuquanwen
 * @Description:
 * @Date: 2018/5/28 9:59
 * @Modified:
 **/
public class ServerHandler extends SimpleChannelInboundHandler<FullHttpRequest> {
    @Override
    protected void messageReceived(ChannelHandlerContext ctx, FullHttpRequest msg) throws Exception {
        DefaultFullHttpResponse response = new DefaultFullHttpResponse(
                HttpVersion.HTTP_1_1,HttpResponseStatus.OK,Unpooled.wrappedBuffer("test".getBytes()));
        HttpHeaders headers = response.headers();
        headers.add(HttpHeaderNames.CONTENT_TYPE, HttpHeaderValues.TEXT_PLAIN +";charset=utf-8");
        headers.add(HttpHeaderNames.CONTENT_LENGTH, ""+response.content().readableBytes());
        headers.add(HttpHeaderNames.CONNECTION, HttpHeaderValues.KEEP_ALIVE);
        ctx.writeAndFlush(response);
    }
}

package com.zqw.netty.http;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.*;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpRequestDecoder;
import io.netty.handler.codec.http.HttpRequestEncoder;
import io.netty.handler.codec.http.HttpResponseEncoder;

/**
 * @Author: zhuquanwen
 * @Description:
 * @Date: 2018/5/28 9:53
 * @Modified:
 **/
public class Server {
    public static void main(String[] args) {
        ServerBootstrap bootstrap = new ServerBootstrap();
        EventLoopGroup boss = new NioEventLoopGroup();
        EventLoopGroup worker = new NioEventLoopGroup();
        try{
            bootstrap.group(boss, worker);
            bootstrap.option(ChannelOption.SO_BACKLOG, 2048);
            bootstrap.childOption(ChannelOption.TCP_NODELAY, true);
            bootstrap.childOption(ChannelOption.SO_KEEPALIVE, true);
            bootstrap.channel(NioServerSocketChannel.class);
            bootstrap.childHandler(new ChannelInitializer<Channel>() {
                @Override
                protected void initChannel(Channel ch) throws Exception {
                    ch.pipeline().addLast(new HttpRequestDecoder());
                    ch.pipeline().addLast(new HttpResponseEncoder());
                    ch.pipeline().addLast(new HttpObjectAggregator(1024*1024));
                    ch.pipeline().addLast(new ServerHandler());
                }
            });
            ChannelFuture future = bootstrap.bind(7777);
            System.out.println("http server start success");
            future.channel().closeFuture().sync();

        }catch (Exception e){
            e.printStackTrace();
        } finally {
            boss.shutdownGracefully();
            worker.shutdownGracefully();
        }
    }
}